| Evolution of residual stress, free volume, and hardness in the laser shock peened Ti-based metallic glass | |
| Wang, Liang1; Wang, Lu1; Nie, Zhihua1; Ren, Yang2; Xue, Yunfei1; Zhu, Ronghua3; Zhang, Haifeng4; Fu, Huameng4 | |
| Corresponding Author | Xue, Yunfei(xueyunfei@bit.edu.cn) |
| 2016-12-05 | |
| Source Publication | MATERIALS & DESIGN
 |
| ISSN | 0264-1275 |
| Volume | 111Pages:473-481 |
| Abstract | Laser shock peening (LSP) with different cycles was performed on the Ti-based bulk metallic glasses (BMGs). The sub-surface residual stress of the LSPed specimens was measured by high-energy X-ray diffraction (HEXRD) and the near-surface residual stress was measured by scanning electron microscope/focused ion beam (SEM/FIB) instrument. The sub-surface residual stress in the LSP impact direction (about-170MPa) is much lower than that perpendicular to the impact direction (about -350 MPa), exhibiting anisotropy. The depth of the compressive stress zone increases from 400 mu m to 500 mu m with increasing LSP cycles. The highest near-surface residual stress is about -750 MPa. LSP caused the free volume to increase and the maximum increase appeared after the first LSP process. Compared with the hardness (567 +/- 7 HV) of the as-cast BMG, the hardness (590 +/- 9 HV) on the shocked surface shows a hardening effect due to the hardening mechanism of compressive residual stress; and the hardness (420 +/- 9 HV) on the longitudinal section shows a softening effect due to the softening mechanism of free volume. (C) 2016 Elsevier Ltd. All rights reserved. |
| Keyword | Bulk metallic glasses Laser shock peening High energy X-ray diffraction Residual stress Free volume Hardness |
| Funding Organization | National Natural Science Foundation of China ; Beijing Higher Education Young Elite Teacher Project ; Program of One Hundred Talented People of the Chinese Academy of Sciences ; U.S. Department of Energy, Office of Science, Office of Basic Energy Science |
| DOI | 10.1016/j.matdes.2016.09.017 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51471035] ; Beijing Higher Education Young Elite Teacher Project ; Program of One Hundred Talented People of the Chinese Academy of Sciences ; U.S. Department of Energy, Office of Science, Office of Basic Energy Science[DE-AC02-06CH11357] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000386869300056 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/123288 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Xue, Yunfei |
| Affiliation | 1.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China 2.Argonne Natl Lab, Xray Sci Div, 9700 S Cass Ave, Argonne, IL 60439 USA 3.Tsinghua Univ, Sch Aerosp, AML, Beijing 100084, Peoples R China 4.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Liang,Wang, Lu,Nie, Zhihua,et al. Evolution of residual stress, free volume, and hardness in the laser shock peened Ti-based metallic glass[J]. MATERIALS & DESIGN,2016,111:473-481. |
| APA | Wang, Liang.,Wang, Lu.,Nie, Zhihua.,Ren, Yang.,Xue, Yunfei.,...&Fu, Huameng.(2016).Evolution of residual stress, free volume, and hardness in the laser shock peened Ti-based metallic glass.MATERIALS & DESIGN,111,473-481. |
| MLA | Wang, Liang,et al."Evolution of residual stress, free volume, and hardness in the laser shock peened Ti-based metallic glass".MATERIALS & DESIGN 111(2016):473-481. |
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